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fix: remove snapshot view on controller dismissal #11

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fix: remove snapshot view on controller dismissal #11

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3d3747b
remove snapshot view on controller dismissal
timglorioso Sep 8, 2017
eefbcd0
store reference to current snapshot view
timglorioso Feb 8, 2018
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18 changes: 14 additions & 4 deletions CardStackController/Classes/CardStackController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,7 @@ public class CardStackController: UIViewController {
fileprivate var isPresentingCard = false
fileprivate var initialDraggingPoint = CGPoint.zero
fileprivate var stackCompletionBlock: CompletionBlock?
fileprivate var backgroundSnapshotView: UIImageView?

fileprivate var previousViewController: UIViewController? {
let previousCardIndex = viewControllers.count - 2
Expand Down Expand Up @@ -127,10 +128,19 @@ public class CardStackController: UIViewController {
super.viewWillAppear(false)

guard isBeingPresented else { return }
let screenShotImage = drawWindowHierarchy(afterScreenUpdates: false)
let imageView = UIImageView(image: screenShotImage)
view.insertSubview(imageView, at: 0)
imageView.pinEdgesToSuperviewEdges()

let backgroundSnapshot = drawWindowHierarchy(afterScreenUpdates: false)
backgroundSnapshotView = UIImageView(image: backgroundSnapshot)

view.insertSubview(backgroundSnapshotView!, at: 0)
backgroundSnapshotView!.pinEdgesToSuperviewEdges()
}

public override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)

backgroundSnapshotView?.removeFromSuperview()
backgroundSnapshotView = nil
}

public override func viewDidLayoutSubviews() {
Expand Down